Study on resonant fly-back converter for DC distribution system

This paper describes a resonant fly-back converter with thyristor switches, which can be used for the de distribution with a PWM voltage-source invert er. The proposed converter operates to change high-voltage de into low-volt age de with isolation and large converting ratio. The converter has a main thyristor switch and an LC resonant circuit with an auxiliary, thyristor sw itch for commutation in the primary side of the gap transformer The operati on of proposed converter was verified through computer simulations with EMT P and experiments with a hardware scaled-model. The proposed converter coul d be implemented with commercially available components and proven technolo gies for supplying electricity to the rural or remote customer.